A scene from “Unfinished Business”

Kaede (narrating): It has been fifty years since Inuyasha was sealed the the Sacred Tree. He looks exactly the same as he did then. Fifty years ago, my sister knew she was going to die. So why did she decide to use the Arrow of Sealing rather than a sacred arrow to destroy him? Why did she seal Inuyasha to the Sacred Tree, a Tree of Ages said to be able to transcend time? And if Inuyasha was filled with hatred toward my sister, who took back the Sacred Jewel and sealed him the Sacred Tree, then why does he wear such a peaceful expression? It seems I understand very little after all. I wonder sometimes if I ever will.